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dc.contributor.authorFantino, Elena
dc.contributor.authorFlores Le Roux, Roberto Maurice
dc.contributor.authorDi Salvo, Alessio
dc.contributor.authorDi Carlo, Marilena
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.identifier.citationFantino, E., Flores, R., Di Salvo, A., Di Carlo, M. Analysis of perturbations and station-keeping requirements in highly-inclined geosynchronous orbits. A: International Symposium on Space Flight Dynamics. "ISSFD 2015: 25th International Symposium on Space Flight Dynamics, 19-23 October, Munich, Germany". Munich: 2015, p. 1-13.
dc.description.abstractThere is a demand for communications services at high latitudes that is not well served by conventional geostationary satellites. Alternatives using low-altitude orbits require too large constellations. Other options are the Molniya and Tundra families (critically-inclined, eccentric orbits with the apogee at high latitudes). In this work we have considered derivatives of the Tundra type with different inclinations and eccentricities. By means of a high-precision model of the terrestrial gravity field and the most relevant environmental perturbations, we have studied the evolution of these orbits during a period of two years. The effects of the different perturbations on the constellation ground track (which is more important for coverage than the orbital elements themselves) have been identified. We show that, in order to maintain the ground track unchanged, the most important parameters are the orbital period and the argument of the perigee. Very subtle changes in the orbital period (due mainly to lunar perturbations) cause a large east-west drift of the ground trace which dwarfs the displacement due to the regression of the ascending node. From these findings, a station-keeping strategy that minimizes propellant consumption has then been devised. Our results offer interesting guidelines for the design and operation of satellite constellations using these orbits.
dc.format.extent13 p.
dc.subjectÀrees temàtiques de la UPC::Física::Astronomia i astrofísica
dc.subject.lcshArtificial satellites--Orbits
dc.subject.lcshArtificial satellites in telecommunication
dc.subject.lcshPerturbation (Astronomy)
dc.titleAnalysis of perturbations and station-keeping requirements in highly-inclined geosynchronous orbits
dc.typeConference report
dc.subject.lemacSatèl·lits artificials--Òrbites
dc.subject.lemacSatèl·lits artificials en telecomunicació
dc.subject.lemacPertorbació (Astronomia)
dc.contributor.groupUniversitat Politècnica de Catalunya. L'AIRE - Laboratori Aeronàutic i Industrial de Recerca i Estudis
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorFantino, E.; Flores, R.; Di Salvo, A.; Di Carlo, M.
upcommons.citation.contributorInternational Symposium on Space Flight Dynamics
upcommons.citation.publicationNameISSFD 2015: 25th International Symposium on Space Flight Dynamics, 19-23 October, Munich, Germany

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